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{
    "id": 54799,
    "url": "http://patches.dpdk.org/api/covers/54799/?format=api",
    "web_url": "http://patches.dpdk.org/cover/54799/",
    "project": {
        "id": 1,
        "url": "http://patches.dpdk.org/api/projects/1/?format=api",
        "name": "DPDK",
        "link_name": "dpdk",
        "list_id": "dev.dpdk.org",
        "list_email": "dev@dpdk.org",
        "web_url": "http://core.dpdk.org",
        "scm_url": "git://dpdk.org/dpdk",
        "webscm_url": "http://git.dpdk.org/dpdk"
    },
    "msgid": "<1560505157-9769-1-git-send-email-david.marchand@redhat.com>",
    "date": "2019-06-14T09:39:14",
    "name": "[v2,0/3] Improve automatic selection of IOVA mode",
    "submitter": {
        "id": 1173,
        "url": "http://patches.dpdk.org/api/people/1173/?format=api",
        "name": "David Marchand",
        "email": "david.marchand@redhat.com"
    },
    "mbox": "http://patches.dpdk.org/cover/54799/mbox/",
    "series": [
        {
            "id": 5011,
            "url": "http://patches.dpdk.org/api/series/5011/?format=api",
            "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=5011",
            "date": "2019-06-14T09:39:14",
            "name": "Improve automatic selection of IOVA mode",
            "version": 2,
            "mbox": "http://patches.dpdk.org/series/5011/mbox/"
        }
    ],
    "comments": "http://patches.dpdk.org/api/covers/54799/comments/",
    "headers": {
        "List-Id": "DPDK patches and discussions <dev.dpdk.org>",
        "From": "David Marchand <david.marchand@redhat.com>",
        "List-Help": "<mailto:dev-request@dpdk.org?subject=help>",
        "Date": "Fri, 14 Jun 2019 11:39:14 +0200",
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        "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>",
        "Cc": "benjamin.walker@intel.com, jerinj@marvell.com, anatoly.burakov@intel.com,\n\tmaxime.coquelin@redhat.com, thomas@monjalon.net",
        "To": "dev@dpdk.org",
        "Errors-To": "dev-bounces@dpdk.org",
        "References": "<20190530174819.1160221-1-benjamin.walker@intel.com>",
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        ],
        "X-Original-To": "patchwork@dpdk.org",
        "List-Archive": "<http://mails.dpdk.org/archives/dev/>",
        "X-Scanned-By": "MIMEDefang 2.79 on 10.5.11.11",
        "Subject": "[dpdk-dev] [PATCH v2 0/3] Improve automatic selection of IOVA mode",
        "In-Reply-To": "<20190530174819.1160221-1-benjamin.walker@intel.com>",
        "Message-Id": "<1560505157-9769-1-git-send-email-david.marchand@redhat.com>",
        "Precedence": "list",
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    },
    "content": "In SPDK, not all drivers are registered with DPDK at start up time.\nPreviously, that meant DPDK always chose to set itself up in IOVA_PA\nmode. Instead, when the correct iova choice is unclear based on the\ndevices and drivers known to DPDK at start up time, use other heuristics\n(such as whether /proc/self/pagemap is accessible) to make a better\nchoice.\n\nThis enables SPDK to run as an unprivileged user again without requiring\nusers to explicitly set the iova mode on the command line.\n\n\nChangelog since v1:\n- I took over the series following experiments and discussions with Ben\n  and others, squashed Ben patches as two patches focusing on the main\n  issues,\n- introduced a fix on KNI,\n- on the EAL bits,\n\n  - added log on which IOVA mode has been selected,\n  - updated BSD EAL,\n  - in Linux EAL, moved KNI special case after IOVA selection,\n  - in Linux EAL, added check on forced mode wrt physical addresses\n    availability,\n\n- on the PCI bus driver bits,\n\n  - enforced the checks in the common code of the PCI bus,\n  - added debug logs to track why a iova mode has been chosen per device,\n  - added BSD part,\n  - in Linux part, checked that VFIO is enabled,\n  - in Linux part, defaulted to DC if a driver supports both PA and VA,"
}